Quarter	Percent, Seasonally Adjusted
1998-04-01	3.13068067057160
1999-04-01	2.54827792156082
2000-04-01	2.71771473913906
2001-04-01	1.69366715758468
2002-04-01	1.98921732664064
2003-04-01	2.48721114835068
2004-04-01	3.22913088285812
2005-04-01	3.71423791199598
2006-04-01	3.05755395683453
2007-04-01	3.11314791403287
2008-04-01	2.56291492975143
2009-04-01	2.72713344568715
2010-01-01	3.78476514354980
2010-04-01	3.37000770092694
2010-07-01	3.64463409294363
2010-10-01	3.15931495895519
2011-01-01	3.72596472273884
2011-04-01	3.63232201970909
2011-07-01	3.22829244024538
2011-10-01	3.56353563506332
2012-01-01	3.62023359939026
2012-04-01	3.20434510824067
2012-07-01	3.05238422718471
2012-10-01	3.51850513047420
2013-01-01	3.35941085704969
2013-04-01	3.61887052098633
2013-07-01	3.03077953432193
2013-10-01	3.03318870720284
2014-01-01	3.10306029841850
2014-04-01	3.58931479654216
2014-07-01	3.18037778591087
2014-10-01	3.40000764954582
2015-01-01	3.80047266352801
2015-04-01	3.52030015110198
2015-07-01	4.66213815498121
2015-10-01	4.13069966731095
2016-01-01	3.75092970080696
2016-04-01	4.06482867477249
2016-07-01	3.70804230637099
2016-10-01	3.57620682722170
2017-01-01	3.77894829630348
2017-04-01	3.75911524810373
2017-07-01	3.74792274884644
2017-10-01	4.01575385936034
2018-01-01	4.19561781839414
2018-04-01	4.10601503487539